<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <script>
      const id = Symbol("id");
      const name = Symbol("name");
      const age = Symbol("age");

      // console.log(typeof name);

      // name.toString(); // name 可以是一个包装对象

      console.log(name.description);
      console.log(age.description);
      console.log(name.toString() + "hello");
      // console.log(String(name) + "hello");
      // console.log(name + "hello");
    </script>
  </body>
</html>
